19122786240 has 224 divisors, whose sum is σ = 62132772864. Its totient is φ = 4981616640.

The previous prime is 19122786233. The next prime is 19122786253. The reversal of 19122786240 is 4268722191.

It is a junction number, because it is equal to n+sod(n) for n = 19122786192 and 19122786201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8167470 + ... + 8169810.

Almost surely, 2^19122786240 is an apocalyptic number.

19122786240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19122786240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31066386432).

19122786240 is an abundant number, since it is smaller than the sum of its proper divisors (43009986624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19122786240 is a wasteful number, since it uses less digits than its factorization.

19122786240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 19122786240 in words is "nineteen billion, one hundred twenty-two million, seven hundred eighty-six thousand, two hundred forty".